claude-code - 💡(How to fix) Fix [Bug] ExitPlanMode tool missing from Opus 4.6 1M context deferred registry [1 comments, 2 participants]

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TL;DR

The ExitPlanMode tool is missing from the registry in Opus 4.6 1M context sessions, causing an error when attempting to exit plan mode.

Guidance

• Verify that the ExitPlanMode tool is correctly installed and registered in the Opus 4.6 1M context configuration.
• Check the tool registry for any misconfigurations or missing dependencies that may be preventing the ExitPlanMode tool from being loaded.
• Consider using a plain-text workaround to exit plan mode, as suggested in the issue, until the ExitPlanMode tool is available.
• Review the error logs to ensure that there are no other tool-related errors that may be contributing to the issue.

Example

No code snippet is provided as the issue does not imply a specific code change.

Notes

The issue appears to be specific to the Opus 4.6 1M context configuration, and the ExitPlanMode tool is available in standard Sonnet sessions. This suggests that the issue may be related to the configuration or setup of the Opus 4.6 1M context.

Recommendation

Apply a workaround, such as using a plain-text command to exit plan mode, until the ExitPlanMode tool is available. This will allow the model to continue functioning while the issue is being investigated and resolved.